cornett



(No Model.) 2 Sheets-Sheet 1. J. P. GORNETT.

BEATING ENGINE. No. 524,934. Patented Aug. 21, 1894.

4 Jruwdor m: uom'us PETERS 00.. Puma-um" msumomm n. c.

UNIT D STATES PATENT OFFICE. I i

JAMES P. CoRNETTpOF OLAXHEUGH, NEAR SUN DERLAND, ENGLAND;

BEATlNG- -ENGINE.

SPECIFICATION forming part of Letters Patent No. 524,934, dated August 21,1894. Application filedI'ebruary e, 1894. Serial 110.499.2 41. (NoznocleL) i To all whom it may concern:

, Be it known that I, JAMES PORTEUS COR- NETT,a subject of the Queen of Great Britain and Ireland, and a resident of Claxheugh, near Sunderland, county of Durham, England,

type, as well as to the ordinary Hollander forms.

A special value attaching to my invention is that it can be readily applied to existing engines at comparatively small cost no reconstruction of the vat or alteration of the roll or plate or mid-feather beingnecessary.

My improvements will effect a great saving in power and will produce a better pulp at re duced cost and wear and tear of machinery and the method by which I attain these results I will now fully explain with reference to the accompanying drawings, in which- Figure 1 shows a plan view, Fig. 2 being a side elevational view, partly in sectional elevation. Fig. 3 shows an end view hereinafter described and in the following description like marks of reference designate like parts. Referring to the drawings, a is the roll, a the plate, a the roll spindle, a the vat, 0, the midfeather, a the front fall leading to the plate and 6 is the backfall.

. It will be observed that just clear of the plate on the backfall side I construct an out-. let 7 in .the backfall for the pulp. This outlet is connected to a pipe or conduit 8 which leads via pipe 8 to a centrifugal or other pump or elevator 9 driven by preference by belting 10 from the roll spindle, P P'being pulleys on the roll and pump spindles to take the belting. The delivery from the pump is then carried upward through pipe 12 to a suflicient height to deliver intothe vat at 13.

Fig. 3 shows the form of pipe 8 which I prefer, the bottom of the pipe sloping from both ends toward the center, whence the pulp is withdrawn through pipe 8 as described.

. f Itwill also be observed that the backfall is carried up more or less parallel with the roll as between A to B so as to form a continuation, as it were, of roll casing 14. or the roll casing may be carried down to the backfall to produce the same effect. In working, therefore, the power transmitted to the roll is util- .ized in grinding or beating the pulp passing between it and the plate and immediately the pulp has passed the plate it is led away by the suction of the pump or elevator through outlet 7 and pipes 8 8 to the pump or elevator whence it is delivered through pipe 12 into the vat at 13. By this arrangement, the increased head at which the pulp is delivered into the vat is utilized to effect the swirling or propulsion of the pulp atan increased velocity within the vat, the sides of which may be heightened as shown at H or as found desirable.

A splash-board s hinged at 8' may be conveniently provided as shown.

As usually constructed the roll bars are built in the roll in groups or clumps in order to assist the propulsion of the pulp but in the engine described the bars may be arranged equidistant from one anotheras the work of propulsion of the pulp is taken awayfrom theroll and is efiected as above described.

1am aware that it is not new to remove from the roll the function of propelling the pulp and of lifting it over the backfall nor is there any novelty in the use of pumps, centrifugal or otherwise or Archimedean screws, elevators or propellers for giving motion to the pulp. In all the arrangements hitherto constructed for effecting the purposes of relieving the roll of the work of propelling and lifting the pulp,

thereby confining it to its normalfunction of grinding and breaking the pulp, an entirely new design and construction of vat and engine has been necessary thereby involving a serious item of cost to those paper-makers who might wish to adopt the system.

By my invention no new design of vat or engine is necessary as'any existing vat and engine can be easily altered to efiect these much desired results at a comparatively trithe pipe connections betweensuchorifice andthe pump, which will be'placed outside the vat, can be made in theiordinaryway. The pump=will deliver, in t'heicase'o-t "an Umphen-v ston engine, i-nprecisely-the same way as'described*andiillustrated" with reference "to the Hollander engine and the circulation will proceed 'in the Umpherstonengine as be-.

fore,exceptingwthatthe pulp will be :With-' drawn at the 'zorifice -in the backfa'll and be delivered as already fully described; I r L What 'I- claim: as my in'ventiomlandi desire": to secure "by L'etters Pat'ent, is---- 1. The combination with thesloping'backw fall of'a beating engine of'an orifice 7 andout-v I let pipe-8. situated immediately contiguous to thepl'ate; such-outlet pipe leading to a propelling or pumping engine 9 adapted to withdraw the pulp through the orifice 7 and pipe 8 and to deliver it through a pipe 12 into the vat at a sufficient level to. cause circulation substantially as andfor the purposes setforth.

2. In abeating engine in which there is combined with the sloping backfall an orifice 7 and outlet pipe 8 situated immediately contiguous to the plate, such outlet pipe leading to a propolling or pumping engine 9 adapted to withdraw the pulp through the orifice 7 and pipe 8 andto deliver it'through a pipe 12 into the Vat at a sufficient level to cause circulation,

constructing the 's'lopingbackfalland 1011" cover 14 as, a continuation of eaclrother substantially as set forth;-i.

In testimony =whereoft= I have signed: my

name'to this specification in thezpreseniceofi two subscribing; witnesses}.- 1' I J. P. CORNE'DTJTF Witnesses!" KELso STOREY,

Solicitor, Sande bland: 1 THoMAsnCARNsEmv His Clerk. 

